Senior Martech Engineer

Efí Bank

Senior Martech Engineer responsible for implementing data tracking and integrations at Efí Bank. Collaborating with marketing and engineering teams to optimize data usage and enhance performance.

Posted 6/18/2026full-timeRemote • 🇧🇷 BrazilSeniorWebsite

Tech Stack

Tools & technologies

CloudJavaScriptSQL

About the role

Key responsibilities & impact

Implement and manage tracking using GTM, GA4 and the Data Layer, ensuring data quality, consistency and persistence (UTMs, events and user journeys);
Design, document and standardize architecture and event taxonomy, and create scripts for data capture and enrichment;
Build integrations between CRM, CDP, advertising platforms and web applications using APIs, webhooks and tools such as n8n, Zapier or similar;
Develop data pipelines and automated workflows with a focus on scalability and operational efficiency;
Use Cursor, LLMs (such as ChatGPT and APIs) and other AI solutions for code generation and review (JS, integrations, scripts), troubleshooting, accelerating deliveries, personalizing journeys, intelligent automations and data enrichment;
Develop and optimize web pages and components (Webflow, custom code or frameworks), applying best practices for loading (lazy loading, async) and continuously improving performance and Core Web Vitals;
Integrate and evolve tools such as GA4, GTM, Branch.io, Amplitude, Salesforce, Marketing Cloud and Databricks, ensuring best practices, governance, scalability and enabling teams to activate data and journeys;
Work with SQL for data exploration and structuring, supporting modeling, business metrics and attribution and ROI analyses;
Implement A/B tests and experiments, support personalization strategies and continuously optimize funnels and conversion.

Requirements

What you’ll need

Bachelor’s degree (completed);
Experience with GTM, GA4 and advanced tracking;
Proficiency in JavaScript, HTML and CSS;
Experience with integrations (APIs, webhooks, automations);
Experience with CRM systems (Salesforce or similar);
Experience with automation tools (Zapier, n8n or similar);
Experience with UTMs, attribution and conversion funnels;
Knowledge of SQL and data modeling;
Practical use of Cursor or AI-first tools;
Experience with n8n or advanced low-code automations;
Experience integrating AI into workflows (APIs, agents, etc.);
Knowledge of CDPs (Segment, mParticle, etc.);
Experience with CRO and experimentation;
Experience in growth/performance marketing environments;
Knowledge of technical SEO.

Benefits

Comp & perks

32-hour workweek: We offer a 32-hour weekly schedule for employees with time tracking;
Co-pay health plan for employees and dependents;
Clude Saúde: online medical care and other health solutions;
Co-pay dental plan for employees and dependents;
Meal and food allowance on the Eva Card flexible benefits card with an average value of R$ 1,600.00 per month;
Wellhub: corporate physical activity platform focused on quality of life and wellbeing, providing access to partner gyms and studios for employees and dependents;
Home-office allowance of R$ 140.00 per month;
Infrastructure to support remote work;
Birthday day off;
Corporate University;
Tuition assistance for employees and dependents, according to company policy;
Language course subsidy for employees, according to company policy;
Extended maternity leave of 7 months and extended paternity leave of 30 days, also supporting adoptive parents;
Life insurance;
Emotional health program and discounted psychological care for employees and dependents via the Moodar platform;
Employee Benefits Club with exclusive discounts and partnerships for Efí employees.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

JavaScriptHTMLCSSSQLAPIswebhooksdata modelingA/B testingdata pipelinesCRO

Certifications

Bachelor's degree